samba - Dec 2005 - Setting "Calling name" in NBSS

Is it mandatory to set "Calling name" in NetBIOS session request in
samba-2.2.7a? We've a smbclient that sets neither scopeID nor
callingname in the NBSS and it works fine accessing win2k3 servers. Just
wondering whether not setting the calling name is going to cause any
issues?

 

Thanks

Ravi